Development of Highly Stable Low Ni Content Catalyst for Dry Reforming of CH<sub>4</sub>‐Rich Feedstocks
Quan Luu Manh Ha, Henrik Lund, Carsten Kreyenschulte, Stephan Bartling, Hanan Atia, Thanh Huyen Vuong, Sebastian Wohlrab, Udo Armbruster
Abstract
Abstract Highly active and coking‐resistant Ni catalysts suited for the dry reforming of CH 4 ‐rich gases (70 vol %, e. g. biogas or sour natural gas) were prepared starting from a Mg‐rich Mg−Al hydrotalcite support precursor. Calcination at 1000 °C yields two phases, MgO and MgAl 2 O 4 spinel. Complexation‐deposition of Ni with citric acid on the preformed support as well as lanthanum addition yields a catalyst with remarkably low carbon accumulation over 100 h on stream attributed to both high Ni dispersion and preferred interactions of Ni with MgO on MgAl 2 O 4 .
Topics & Concepts
Carbon dioxide reformingHydrotalciteCatalysisCalcinationSpinelLanthanumCitric acidInorganic chemistryChemistryCarbon fibersSyngasMaterials scienceChemical engineeringMetallurgyOrganic chemistryComposite materialEngineeringComposite numberCatalysts for Methane ReformingCatalytic Processes in Materials ScienceAmmonia Synthesis and Nitrogen Reduction